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Pizza Pie With Concentric Rings of Crust
A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
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| Number | Title | Issue Date |
| 7332903 | Device and method for measuring a current flowing in an electrical conductor A device is provided for measuring a current flowing in an electrical conductor with a magnetic circuit for coupling to the electrical conductor. The magnetic circuit has an air gap, and a magnetic field sensitive component is disposed in the air gap. The magnetic f... | 02/19/2008 |
| 7259479 | Transformerless power supply, dual positive or dual negative supplies The positive half-cycle for an ac input signal is applied to a wave rectifier (20, 22), a filter (41) and a voltage regulator (30, 31) for generating a dc output signal. The ac input signal is also applied to a transistor (50) in either t... | 08/21/2007 |
| 7148660 | System and method for power conversion using semiconductor switches having reverse voltage withstand capability A power converter system is provided for supplying power to an electrical load. The power converter system includes a power converter circuit adapted to perform an AC to DC power conversion and an active clamp circuit coupled to the power converter circuit for regul... | 12/12/2006 |
| 7135847 | Serial connected low-loss synchronously switchable voltage chopper The invention relates to a buck converter comprising: a pair P—0 of switches SB, SH in series and connected to an input terminal B of the converter by the switch SB, K other additional pairs P—1, P—2, . . .... | 11/14/2006 |
| 7130205 | Impedance source power converter An impedance source power converter includes a power source, a main converter circuit and an impedance network. The main converter circuit is coupled to a load and the impedance network couples the power source to the main converter circuit. The impedance network is... | 10/31/2006 |
| 6919712 | Excitation control device and excitation control method A reference voltage of an output terminal of a synchronous machine is set according to a reactive current output from the synchronous machine, a reference voltage of the high voltage side of a transformer, and a phase compensation transfer function to quicken attenu... | 07/19/2005 |
| 6914794 | Power conversion device A low cost power conversion device operating at a high frequency with high efficiency is realized by using semiconductor switching devices such as FETs being inexpensive and having low withstand voltages and low forward voltage drops. A second error signal obtained ... | 07/05/2005 |
| 6667667 | Method for driving at least one inductive load using pulse width modulated control signals A method for driving at least one inductive load using pulse width modulated control signals, via a PWM control unit, the control pulses of the PWM control signals connecting the load to and disconnecting it from a d.c. supply voltage via a semiconductor ... | 12/23/2003 |
| 5986907 | Method and apparatus for rectification derectification and power flow control A method of transferring energy from a power source into an output node including the steps of separately charging each of a plurality of energy storage elements from the power source; after the plurality of energy storage elements are charged, dischargin... | 11/16/1999 |
| 5905371 | Sequential discharge and its use for rectification A method of transferring energy from a power source into an output node including the steps of separately charging each of a plurality of energy storage elements from the power source; after the plurality of energy storage elements are charged, dischargin... | 05/18/1999 |
| 5880946 | Magnetically controlled transformer apparatus for controlling power delivered to a load A magnetically variable transformer having primary and secondary windings wound on a magnetic core wherein the transformer core with associated windings is placed in close proximity to an independently wound control coil. The control coil is positioned in... | 03/09/1999 |
| 5870291 | Asymmetrical half-bridge converter having adjustable parasitic resistances to offset output voltage DC bias An asymmetrical half-bridge converter, a method of operating the same and a power supply that incorporates either the converter or the method. In one embodiment, the converter includes: (1) a power transformer that receives asymmetrical AC input power int... | 02/09/1999 |
| 5764501 | Compact and efficient power transfer system and method An electrical power transfer apparatus for connecting to a multiphase power line carrying a AC signal having a period of TAC, the apparatus including: a capacitive storage circuit; a plurality of charge transfer circuits connected to the capaci... | 06/09/1998 |
| 5717586 | Single winding power converter The present invention provides smooth conversion of electric power between an AC line operating at a first voltage and a DC line operating at a second voltage bearing a fixed ratio to the first voltage. In one embodiment, polyphase AC is converted to ripp... | 02/10/1998 |
| 5357419 | Compact and efficient transformerless power conversion system A transformerless power conversion system including a plurality of capacitors connected in series; a charging circuit connected to the plurality of capacitors, the charging circuit charging the plurality of capacitors from a voltage source to a predetermi... | 10/18/1994 |
| 5349666 | Reduced power line fluctuation/noise circuit by increasing impedance level when number of bus lines simultaneously change state exceeds the predetermined number A microcomputer that reduces through current of output buffers, and thus, reduces power line fluctuation that occurs when a large number of the bus lines connected to output buffers change state at the same time. The through current (or punch-through curr... | 09/20/1994 |
| 5272619 | Invertor systems utilizing inductive or capacitive reactance This disclosure consists of two fluxgates, a signal generator and an invertor transformer. Signal current flowing from right to left through the signal coil of a first fluxgate allows power current flow from left to right through the power coil, adding en... | 12/21/1993 |
| 5270913 | Compact and efficient transformerless power conversion system Disclosed is a new Transformerless Power Conversion System (TPCS) that allows a direct voltage step-up or step-down of DC or AC power without the use of magnetic core transformers. The operation is accomplished with solid state switching devices, capacito... | 12/14/1993 |
| 4739225 | Reduced requirement energy storage for load having non-zero minimum operating potential A load is provided, at all times when in operation, with a D.C. voltage having at least a minimum holding magnitude by: providing a source voltage having a peak magnitude greater than the holding magnitude; connecting the source voltage to the load only w... | 04/19/1988 |
| 4161772 | Conversion and control of electrical energy by electromagnetic induction An alternating to direct current power converter utilizing dynamically controlled electromagnetic induction. A feedback system controls permeance within a network of magnetic paths by progressive saturation or domain rotation within selected portions of t... | 07/17/1979 |
| 4160287 | Electrolyzer power supply The invention concerns an electrolyzer power supply, especially for use in the industrial production of hydrogen. It is constituted by four sub-assemblies placed side-by-side in a filter-press type structure. These sub-assemblies each comprise electrodes ... | 07/03/1979 |
| 4104716 | Saturable magnetic device for regulating commutating or converting an electric current from AC to DC or vice versa An electric current regulation, commutation and conversion device, which is particularly adapted for current regulation and commutation in rotating direct current electrical machines and for converting alternating current into direct current or vice versa... | 08/01/1978 |
| 4059791 | Voltage supply circuit for voltage-dependent capacitor diode tuning In a voltage supply circuit for voltage-dependent capacitor diode tuning, a d.c. voltage is produced by a.c.-d.c. conversion of an a.c. voltage which is obtained by amplifying an a.c. signal from an oscillator with the aid of a transistor amplifier of the... | 11/22/1977 |
| 4025828 | Rectifier and rectifying method A rectifier comprising a vessel filled with an aqueous solution or dispersion of a purified polyelectrolyte, and two electrodes immersed therein, wherein the ratio S1 /S2 of the area S1 of one electrode at the portion imme... | 05/24/1977 |
| 3999114 | Control unit for a converter A control unit for an externally commutated converter of the type which forms firing pulses for the converter rectifiers from a comparison of a synchronization voltage and a variable d.c. voltage in which the synchronizing voltage is fed to an amplifier f... | 12/21/1976 |
| 3989997 | Absolute-value circuit The circuit comprises three current mirrors, the first and second having at least two output current paths and the third, one output current path. The first mirror is complementary to the second and supplies its output currents to the second. The signal c... | 11/02/1976 |
